marine biologist claims that the mean length of mature female pink seaperch is different in fall and winter. A sample of 15 mature female pink seaperch collected in fall has a mean length of 111
A marine biologist claims that the
mature female pink seaperch collected in fall has a mean length of
millimeters and a standard deviation of
millimeters. A sample of
mature female pink seaperch collected in winter has a mean length of
millimeters and a standard deviation of
millimeters. At
can you support the marine biologist's claim? Assume the population variances are equal. Assume the samples are random and independent, and the populations are
A) Identify the claim and state H0 and Ha
B) Find the critical value(s) and identify the rejection region(s).
C) Find the standardized test statistic.
D)Decide whether to reject or fail to reject the null hypothesis.
E)nterpret the decision in the context of the original claim.
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